A boy scavenges the beach for his bottle top collection when he discovers a lost “thing”; a large, freakish creature that looks like a cross between a crab and a pot-bellied stove. Thus begins a witty and strange narrative set in a creepy, futuristic environment. Shaun Tan’s artwork, collages comprised of such unusual elements as old textbook pages, oil paint, gears, and tubes, inspires young readers to figure out what goes where, and why, in this challenging mix of science fiction and puzzle book.